precipitation

1[uncountable](specialist)rain, snow, etc. that falls; the amount of this that fallsThere is heavy precipitation in some parts of the country.Acid precipitation may cause a reduction in forest productivity.an increase in annual precipitationAnnual precipitation ranges from 500 to 2 200 mm.In these areas precipitation was formerly too low to support growth.Wordfinderdownpour,drought,flash flood,monsoon,precipitation,puddle,rain,shelter,shower,squallSee related entries:Rain

2[uncountable,countable](chemistry)a chemical process in which solid material is separated from a liquidcalcium phosphate precipitation

Word Originlate Middle English (denoting the action of falling or throwing down): from Latinpraecipitatio(n-), from praecipitare